WO2021208488A1

WO2021208488A1 - Circuit breaker

Info

Publication number: WO2021208488A1
Application number: PCT/CN2020/139369
Authority: WO
Inventors: 卢科军; 杨安
Original assignee: 浙江正泰电器股份有限公司
Priority date: 2020-04-13
Filing date: 2020-12-25
Publication date: 2021-10-21
Also published as: EP4138107A4; BR112022020351A2; CN111477508A; JP2023521717A; EP4138107A1; AU2020442183B2; US20230145051A1; AU2020442183A1

Abstract

A circuit breaker. A circuit breaker housing (1) thereof comprises a closing button hole (110) and an opening button hole (111). A button mechanism (2) comprises a closing button (20) and an opening button (21). The closing button (20) comprises a closing button operating end slidably provided in the closing button hole (110). The opening button (21) comprises an opening button operating end slidably provided in the opening button hole (111). The closing button operating end is pressed in the direction of the interior of the circuit breaker housing (1) to drive an operating mechanism to close the circuit breaker, while the opening button operating end moves in the direction of the exterior of the circuit breaker housing (1); the opening button operating end is pressed in the direction of the interior of the circuit breaker housing (1) to drive the operating mechanism to open the circuit breaker, while the closing button operating end moves in the direction of the exterior of the circuit breaker housing (1). The circuit breaker is capable of determining the open/closed state of the circuit breaker by observing the state of the buttons (20 and 21). The closing button operating end and the opening button operating end respectively are provided in the closing button hole (110) and the opening button hole (111), thus preventing inadvertent operation of the circuit breaker due to contact by accident.

Description

breaker

Technical field

The invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker.

Background technique

The widespread use of circuit breakers has effectively improved the safety of electrical appliances. In order to meet the development trend of miniaturization of electrical equipment, the overall structure and operation methods of circuit breakers adapted to it also need to be continuously upgraded and improved; after full investigation and research After the technology is available, it is found that most of the existing circuit breakers have the following shortcomings:

1. Existing plug-in circuit breakers usually set up a separate opening and closing indicator structure to indicate the opening and closing state of the circuit breaker, which causes the internal structure of the circuit breaker to be complicated and the overall volume to increase; moreover, operation The buttons of the mechanism mostly protrude from the outside of the circuit breaker shell, which may cause misoperation of the circuit breaker due to accidental touch, which affects the stability and safety of electricity use.

2. The existing plug-in circuit breakers generally have two locking mechanisms. One is to prevent the circuit breaker from being closed when it is not installed in place, and the other is to prevent the circuit breaker from being inserted or pulled out of the cabinet in the closed state. The two structures are complex and occupy a lot of space inside the circuit breaker.

3. Existing plug-in circuit breakers generally pull the circuit breaker from the circuit breaker assembly position by pulling the button; and when the user pulls and presses for the opening operation, it is often because the operation strength is not allowed to directly remove the circuit breaker from the assembly position. The disconnection of the circuit breaker assembly position affects the stability and safety of the user's electricity consumption.

4. The design of the circuit breaker shell of the existing plug-in circuit breaker is unreasonable, and the openings provided on the shell are scattered, which is not convenient for the installation of the circuit breaker.

Summary of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide a circuit breaker, which includes a closing button and an opening button, respectively corresponding to the closing operation and the opening operation, and the status of the circuit breaker can be judged by observing the state of the two buttons. The opening and closing state, and the closing button operating end and the opening button operating end are respectively arranged in the closing button hole and the opening button hole, so that the circuit breaker will not be misoperated due to accidental touch.

In order to achieve the above objectives, the present invention adopts the following technical solutions:

A circuit breaker includes a circuit breaker housing 1 and a button mechanism 2 arranged in the circuit breaker housing 1 and an operating mechanism connected to the button mechanism 2; the circuit breaker housing 1 includes a closing button hole 110 and The opening button hole 111, the button mechanism 2 includes a closing button 20 and an opening button 21 respectively slidably arranged in the circuit breaker housing 1, and the closing button 20 includes one end of which is slidably arranged in the closing button hole 110 The opening button 21 includes an opening button operating end arranged at one end of the closing button and slidingly arranged in the opening button hole 111;

Press the closing button operating end to drive the operating mechanism to close the circuit breaker toward the inside of the circuit breaker housing 1, and at the same time, the opening button operating end moves toward the outside of the circuit breaker housing 1, and presses the opening toward the inside of the circuit breaker housing 1. The operating end of the switch button drives the operating mechanism to open the circuit breaker, and at the same time, the operating end of the switch button moves to the outside of the circuit breaker housing 1.

Preferably, the operating mechanism includes a link mechanism, a transmission member 4 pivotally arranged on the circuit breaker housing 1 and a lever mechanism, and the link mechanism includes a closing link 30, an opening link 31 and a transmission link 32; The other end of the closing button 20 is drivingly connected to the transmission member 4 through the closing link 30, the other end of the opening button 21 is drivingly connected to the transmission member 4 through the opening link 31, and the transmission member 4 is connected to the lever through the transmission link 32. The mechanism is driven and connected, and the lever mechanism is connected with the movable contact 60 of the circuit breaker; when the closing button 20 is pressed toward the inside of the circuit breaker housing 1 to close the circuit breaker, the closing button 20 drives the transmission part through the closing connecting rod 30 4 rotates in the first direction, while the transmission member 4 drives the opening button 21 to move to the outside of the circuit breaker housing 1 through the opening link 31; pressing the opening button 21 to the inside of the circuit breaker housing 1 causes the circuit breaker to open When the opening button 21 drives the transmission member 4 to rotate in the second direction through the opening link 31, while the transmission member 4 drives the closing button 20 through the closing link 30 to move to the outside of the circuit breaker housing 1, the first direction and The second direction is opposite to each other.

Preferably, the transmission member 4 includes a transmission member shaft hole 400, a first connection hole 40, a second connection hole 41 and a third connection hole 42, and a first connection hole 40, a second connection hole 41 and a third connection hole 42 Located at the three vertices of a triangle respectively, the transmission member shaft hole 400 is arranged in the middle of the transmission member 4; A connecting hole 40, a second connecting hole 41, and a third connecting hole 42 are connected with the closing link 30, the opening link 31 and the transmission link 32;

The lever mechanism includes a jumper 50, a lock 51, and a rotating plate 52 pivotally arranged on the circuit breaker housing 1. The jumper 50 and the lock 51 are locked together and pivotally arranged on the rotating plate 52 respectively. The plate 52 is connected to the movable contact 60 of the circuit breaker, and the transmission member 4 is drivingly connected to the trip buckle 50 through the transmission connecting rod 32.

Preferably, the circuit breaker further includes a first track mechanism and a second track mechanism for respectively defining the movement paths of the closing button 20 and the opening button 21.

Preferably, the first track mechanism includes a closing button track table 201 arranged on the closing button 20 and a closing button track groove 101 arranged on the circuit breaker housing 1. The closing button track table 201 is slidably arranged on the closing button. The switch button track groove 101; the second track mechanism includes a switch button track groove arranged on the circuit breaker housing 1, and the switch button 21 is slidably arranged in the switch button track groove.

Preferably, the first track mechanism includes a closing button track table 201 arranged on the closing button 20 and a closing button track groove 101 arranged on the circuit breaker housing 1. The closing button track table 201 is slidably arranged on the closing button. The switch button track groove 101; the second track mechanism includes an opening button rail 205 arranged on the closing button 20 and arranged along the length of the closing button 20, and an opening button arranged on the opening button 21 The rail groove 2150, the opening button rail groove 2150 and the opening button rail bar 205 slidingly fit.

Preferably, the circuit breaker further includes a locking mechanism cooperating with the button mechanism 2, the locking mechanism includes a first locking member 1a with one end protruding outside the circuit breaker housing 1, and the circuit breaker housing 1 further includes a locking mechanism cooperating with the first locking member 1a. Locking piece opening 17;

When the circuit breaker is in the open state, one end of the first locking member 1a protrudes from the locking member opening 17 outside the circuit breaker housing 1, and the first locking member 1a can be retracted into the circuit breaker housing 1 by the retracting external force;

When the circuit breaker is in the closed state, the first locking member 1a protrudes outside the circuit breaker casing 1 and is restricted by the closing button 20 and/or the opening button 21 and cannot be retracted into the circuit breaker casing 1.

Preferably, the circuit breaker further includes an unlocking mechanism drivingly connected to the first locking member 1a;

When the circuit breaker is in the open state, the operation unlocking mechanism can drive the first locking member 1 a to retract into the circuit breaker housing 1.

Preferably, the first locking member 1a is retracted into the circuit breaker and cooperates with the closing button 20 and/or the opening button 21 to limit the position to lock the closing button 20 and/or the opening button 21 so that the circuit breaker cannot be closed. ；

The closing button 20 and/or the opening button 21 are provided with a button limiting slot 216 for limiting and cooperating with the first locking member 1a, and the first locking member 1a includes a button for limiting cooperating with the button limiting slot 216 The first locking member limit table 14a;

When the circuit breaker is in the closed state, the button limit slot 216 and the first locking member limit table 14a are arranged in a staggered manner, and the closing button 20 and/or the opening button 21 prevent the first locking member 1a from facing the circuit breaker housing 1 When the circuit breaker is in the open state, the button limit slot 216 is arranged opposite to the first locking member limit table 14a, and the first locking member 1a can move toward the inner direction of the circuit breaker housing 1 by the retracted external force, The first locking member limiting platform 14a is slid into the button limiting slot 216 and the closing button 20 and/or the opening button 21 are locked.

Preferably, the closing button 20 and the opening button 21 are arranged in parallel and linearly slidably installed in the circuit breaker housing 1, the first locking member 1a is installed in the housing 6 so as to move linearly, and the closing button 20 and the opening button The moving direction of the brake button 21 and the moving direction of the first locking member 1a are perpendicular to each other;

The locking mechanism also includes a first return spring 5a arranged between the first locking member 1a and the circuit breaker housing 1. The first return spring 5a applies a force to the first locking member 1a so that one end of the first locking member 1a is at It protrudes outside the circuit breaker housing 1.

Preferably, the closing button 20 and the first locking member 1a are both located between the opening button 21 and the locking member opening 17, and the first locking member 1a is located on one side of the closing button 20; the opening button 21 It includes a button limiting slot 216 for limiting and cooperating with the first locking member 1a. The first locking member 1a includes a first locking member limiting table 14a that matches with the button limiting slot 216. The closing button 20 is provided with There is a closing button avoiding slot 206 for avoiding the first locking member limit table 14a of the first locking member 1a;

When one end of the first locking member 1a extends outside the circuit breaker housing 1, the first locking member limit table 14a is located in the closing button avoiding groove 206, and the width of the closing button avoiding groove 206 is in the movement of the closing button 20 In the direction, it is greater than the width of the first locking member limit table 14a, so that the closing button 20 and the opening button 21 can move and drive the circuit breaker to close and open;

When the circuit breaker is in the closed state, the button limit slot 216 and the first locking member limit table 14a are arranged in a staggered manner, and the first locking member limit table 14a is located in the closing button avoiding slot 206, and the opening button 21 prevents The first locking member 1a moves toward the inside of the circuit breaker housing 1. When the circuit breaker is in the open state, the button limit slot 216 is arranged opposite to the first locking member limit table 14a, and the first locking member 1a is retracted The external force can move toward the inside of the circuit breaker housing 1, so that the first locking member limit table 14 a slides into the button limit slot 216.

Preferably, the circuit breaker further includes a locking mechanism cooperating with the button mechanism 2, the locking mechanism includes a second locking member 1b pivotally arranged on the circuit breaker housing 1, and the second locking member 1b includes a second locking end 13b;

Pressing the closing button 20 drives the operating mechanism to close the circuit breaker, and at the same time moving the opening button 21 to the outside of the circuit breaker housing 1, the closing button 20 and/or the opening button 21 drive the second locking member 1b to rotate, Make the second locking end 13b protrude outside the circuit breaker casing 1, and the second locking member 1b is restricted by the closing button 20 and/or the opening button 21 and cannot be retracted into the circuit breaker casing 1; pressing the opening button 21 drives the operation The mechanism opens the circuit breaker and at the same time moves the closing button 20 to the outside of the circuit breaker housing 1. The closing button 20 and/or the opening button 21 drive the second locking member 1b to rotate, so that the second locking end 13b retracts into the circuit breaker.器壳1内。 In the housing 1.

Preferably, the closing button 20 includes a closing button driving part 207 drivingly cooperated with the second locking member 1b, and the opening button 21 includes an opening button driving part 217 drivingly cooperated with the second locking member 1b. When the switch is closed, the opening button 21 drives the second locking member 1b to rotate through the opening button driving part 217, so that the second locking end 13b protrudes outside the circuit breaker housing 1, and the opening button driving part 217 is against the second lock The end 13b prevents the second locking end 13b from being retracted into the circuit breaker housing 1. When the circuit breaker is opened, the closing button 20 drives the second locking member 1b to rotate through the closing button driving part 207, so that the second locking end 13b is retracted Inside the circuit breaker casing 1, and the closing button driving portion 207 limits the second locking end 13 b and is kept inside the circuit breaker casing 1.

Preferably, the second locking member 1b includes a second locking member mounting portion 10b pivotally connected to the circuit breaker housing 1, a locking member first actuated portion 11b drivingly engaged with the closing button 20, and the opening button 21 When the circuit breaker is closed, the opening button 21 drives the second locking member 1b to rotate through the first driven portion 11b of the locking member, so that the second locking member 1b is driven to rotate. The locking end 13b protrudes outside the circuit breaker casing 1. When the circuit breaker is opened, the closing button 20 drives the second locking member 1b to rotate through the second actuated portion 12b of the locking member, so that the second locking member 13b is retracted into the circuit breaker casing 1 internal;

The second locking member 1b is stacked with the closing button 20 and the opening button 21 in the thickness direction of the circuit breaker.

Preferably, the first actuated portion 11b of the locking member includes a first actuated protrusion 110b of the locking member protruding toward the opening button 21, and the second actuated portion 12b of the locking member includes a side toward the closing button 20. The second driven protruding post 120b of the protruding locking member;

The closing button driving portion 207 includes a closing button driving inclined surface 2070 that is drivingly matched with the second driven protrusion 120b of the locking member, and the opening button driving portion 217 includes a sub-function drivingly engaged with the first driven protrusion 110b of the locking member. The brake button driving slope 21700, the closing button driving slope 2070 and the opening button driving slope 21700 have opposite inclination directions, the locking member first driven protrusion 110b and the locking member second driven protrusion 120b are located on the opening button driving slope 21700 Between and the closing button drive inclined surface 2070;

When the closing button 20 is pressed to close the circuit breaker, the closing button driving slope 2070 moves to the inside of the circuit breaker housing 1 with the closing button 20 to avoid the second locking member 1b, and the opening button driving slope 21700 follows the opening The button 21 moves toward the outside of the circuit breaker housing 1, and the driving slope 21700 drives the second locking member 1b to rotate through the first driven protrusion 110b of the locking member, so that the second locking end 13b protrudes outside the circuit breaker housing 1, and the driving slope 21700 Resist the first moving protrusion 110b of the locking member so that the second locking member 1b cannot be retracted into the circuit breaker housing 1;

When the opening button 21 is pressed to open the circuit breaker, the opening button driving slope 21700 moves to the inside of the circuit breaker housing 1 along with the opening button 21 to avoid the second locking member 1b, and the closing button driving slope 2070 follows the closing button 20 moves toward the outside of the circuit breaker housing 1, the closing button drive inclined surface 2070 squeezes the second actuated protrusion 120b of the locking member so that the second locking end 13b is retracted into the circuit breaker housing 1, and the closing button drive inclined surface 2070 faces the first The two locking pieces 1b limit their positions to keep them inside the circuit breaker casing 1.

The button mechanism of the circuit breaker of the present invention includes a closing button and an opening button. The user can press the closing button/opening button to drive the circuit breaker to close/open, and the movement direction of the closing button and the opening button are opposite , That is, when pressing the closing button/opening button to the inside of the circuit breaker shell to close/open the circuit breaker, the opening button/closing button moves to the outside of the circuit breaker shell, that is to say, the user can close by observing The state of the button and the opening button is used to distinguish the state of the circuit breaker (closed or open state); one is compared with the existing circuit breaker that uses the push/pull button mechanism to realize the closing/opening of the circuit breaker. The invented circuit breakers all realize the closing/opening of the circuit breaker by pressing the button, thus avoiding the accidental removal of the circuit breaker. Secondly, by observing the state of the closing button and the opening button, the circuit breaker can be judged Therefore, there is no need to set a separate opening and closing indicator device, which simplifies the structure of the circuit breaker and saves the internal space of the circuit breaker. It is also conducive to the development trend of miniaturization of the circuit breaker. The third closing button operation terminal and the opening button The operating ends are respectively arranged in the closing button hole and the opening button hole to prevent the circuit breaker shell from protruding, and to avoid misoperation of the circuit breaker due to accidental touch.

In addition, when the first locking member is retracted by an external force, it can retract into the circuit breaker housing and lock the closing button and/or opening button, so that the circuit breaker cannot be closed. Therefore, the plug-in circuit breaker of the present invention is not assembled to open circuit. When the assembly position of the plug-in circuit breaker is specified, the assembly shell of the circuit breaker presses the first locking piece to move it toward the inside of the shell of the circuit breaker and locks the closing button and/or opening button to prevent the plug-in circuit breaker from being installed during installation. When the circuit breaker is installed in place, it can still be closed, ensuring the personal safety of the user; moreover, when the circuit breaker is in the closed state, the closing button and/or the opening button prevent the first locking member from moving toward the inside of the circuit breaker shell, so the present Once the circuit breaker is closed, the invented plug-in circuit breaker cannot be installed in the circuit breaker assembly position, thereby ensuring that the circuit breaker is installed in the circuit breaker assembly position in the open state and also ensuring that the circuit breaker is in the closed state The lower part cannot be pulled out from the circuit breaker assembly position, thus ensuring the personal safety of the user.

In addition, the second locking end of the second locking member protrudes/retracts outside/inside the circuit breaker shell when the circuit breaker is closed/opened, thereby preventing the circuit breaker from being installed in the circuit breaker in the closed state When the assembly position or the circuit breaker assembly position is pulled out in the closed state, the user's electricity safety and personal safety are guaranteed; further, the plug-in circuit breaker of the present invention has a button mechanism including a closing button and The opening button, the user can respectively press the closing button/opening button to drive the circuit breaker to close/open, and the moving direction of the closing button and the opening button are opposite, that is, press the closing button/opening toward the inside of the circuit breaker shell. The opening button/closing button moves to the outside of the circuit breaker shell when the circuit breaker is closed/opened by the switch button, which means that the user can distinguish the state of the circuit breaker by observing the state of the closing button and the opening button (Closed or open state).

Description of the drawings

Figure 1 is a schematic diagram of the structure of the circuit breaker of the present invention, at least showing the structure of the operating mechanism;

2 is an enlarged schematic diagram of the structure of part A of FIG. 1 of the present invention;

3 is a schematic diagram of the exploded structure of the circuit breaker of the present invention, showing at least the first embodiment of the first track mechanism and the second track mechanism;

4 is a schematic structural diagram of the first embodiment of the closing button of the present invention;

Figure 5 is a schematic structural diagram of the first embodiment of the opening button of the present invention;

Figure 6 is a schematic diagram of the structure of the transmission member of the present invention;

Figure 7 is a schematic structural diagram of the circuit breaker housing of the present invention, showing at least a second embodiment of the first track mechanism;

Figure 8 is a schematic structural diagram of a second embodiment of the closing button of the present invention;

Figure 9 is a schematic structural diagram of a second embodiment of the opening button of the present invention;

Figure 10 is a schematic diagram of the assembly structure of the drawing member and the first locking member of the present invention;

11A is a schematic diagram of the assembly structure of the drawing member and the first locking member of the present invention, the circuit breaker housing is provided with a drawing member holding magnet and the drawing member operating part of the drawing member are magnetically engaged with each other;

11B is a schematic diagram of the assembly structure of the drawing member and the first locking member of the present invention, a drawing member return spring is provided between the drawing member spring limit portion of the drawing member and the drawing member limiting rib;

12 is a schematic diagram of the assembly structure of the drawing member and the first locking member of the present invention. At this time, the drawing member driving part drives the first locking member to move toward the inside of the circuit breaker housing through the linkage member;

13 is a schematic diagram of the assembly structure of the drawing member and the first locking member of the present invention. At this time, the first locking member has been completely moved into the circuit breaker housing, and continuing to pull the drawing member can pull the circuit breaker out of the circuit breaker assembly position;

Figure 14 is a schematic diagram of the cooperation of the first locking member and the button mechanism of the present invention. At this time, the circuit breaker is in the closed state, and the opening button prevents the first locking member from moving toward the inside of the circuit breaker housing;

Figure 15 is a schematic diagram of the cooperation of the first locking member and the button mechanism of the present invention. At this time, the circuit breaker is in the open state, and the button limit slot of the opening button is opposite to the limit table of the first locking member, and the first locking member can open the circuit Move in the inner direction of the device shell;

16 is a schematic structural view of the first embodiment of the first locking member of the present invention;

Figure 17 is a schematic structural view of a second embodiment of the first locking member of the present invention;

Figure 18 is a schematic diagram of the structure of the drawing member of the present invention;

19 is a schematic structural diagram of the circuit breaker housing of the present invention, the pullout slot is provided between the second outlet hole and the pullout operation hole;

Figure 20 is a schematic structural diagram of the circuit breaker casing of the present invention, the puller slot is arranged between the opening button hole and the puller operating hole;

21 is a schematic diagram of the assembly structure of the second locking member of the present invention;

22 is a schematic diagram of the cooperation between the second locking member and the button mechanism of the present invention. At this time, the circuit breaker is in the open state, and the closing button drives the second locking member to rotate, so that the second locking end is retracted into the circuit breaker housing;

23 is a schematic diagram of the structure of the closing button and the opening button of the present invention, showing the structure of the closing button driving part and the opening button driving part;

24 is a schematic diagram of the cooperation between the second locking member and the button mechanism of the present invention. At this time, the circuit breaker is in the closed state, and the opening button drives the second locking member to rotate so that the second locking end protrudes from the circuit breaker housing;

Fig. 25 is a schematic structural diagram of the circuit breaker casing of the present invention, showing the positional relationship of the button hole, the outlet hole, the disconnection hole and the operation hole of the drawing member.

Detailed ways

The specific implementation of the circuit breaker of the present invention will be further described below with reference to the embodiments given in FIGS. 1-25. The circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in Figure 1, the circuit breaker of the present invention, especially a plug-in circuit breaker, includes a circuit breaker housing 1 and a button mechanism 2 provided inside the circuit breaker housing 1, an operating mechanism connected to the button mechanism 2, and The moving contact 60 connected to the operating mechanism and the static contact 61 used in conjunction with the moving contact 60; operating the button mechanism 2 can drive the circuit breaker to open/close through the operating mechanism, so that the moving contact 60 and the static contact 61 Close/open.

Of course, as required, as shown in Figure 1, the circuit breaker of the present invention may also include a short-circuit protection mechanism 7, an overload protection mechanism, and an arc extinguishing system 8 arranged inside the circuit breaker housing 1. The short-circuit protection mechanism 7 and the overload protection mechanism When the circuit breaker has a short circuit and an overload fault, respectively, the operating mechanism is driven to trip the circuit breaker to realize the basic circuit protection function; the arc extinguishing system 8 is used to extinguish the moving contact 60 and the static contact 61 when the contact is broken. The arc is conducive to improving the breaking performance of the circuit breaker and improving the safety of electricity.

As shown in Figures 1-3, the circuit breaker housing 1 includes a closing button hole 110 and an opening button hole 111 provided thereon; the button mechanism 2 includes closing buttons slidably arranged inside the circuit breaker housing 1 The button 20 and the opening button 21. The closing button 20 includes a closing button operating end which is arranged at one end and slidably arranged in the closing button hole 110. The opening button 21 includes one end of which is slidably arranged on the opening button. The opening button operating end in the hole 111; when pressing the closing button operating end/opening button operating end toward the inside of the circuit breaker housing 1 to drive the operating mechanism to close/open the circuit breaker, the corresponding opening button will be at the same time The operating end/closing button operating end moves toward the outside of the circuit breaker housing 1.

Further, as shown in Figures 1 and 2, the operating mechanism includes a link mechanism, a transmission member 4 pivotally arranged in the circuit breaker housing 1, and a lever mechanism. The link mechanism includes a closing link 30, an opening link Rod 31 and transmission connecting rod 32; the other end of the closing button 20 is drivingly connected to the transmission member 4 through the closing connecting rod 30, the other end of the opening button 21 is drivingly connected to the driving member 4 through the opening connecting rod 31, and the transmission member 4 Drive connected to the lever mechanism through the transmission link 32, and the lever mechanism is connected to the movable contact 60 of the circuit breaker; when the closing button 20 is pressed to close the circuit breaker, the closing button 20 is driven and driven by the closing link 30 The member 4 rotates in the first direction, and the rotation of the transmission member 4 drives the opening button 21 to move to the outside of the circuit breaker housing 1 through the opening link 31; when the opening button 21 is pressed to open the circuit breaker, the opening The button 21 drives the transmission member 4 to rotate in the second direction through the opening link 31, while the rotation of the transmission member 4 drives the closing button 20 to move to the outside of the circuit breaker housing 1 through the closing link 30, the first direction and the second direction The directions are opposite to each other. The function of the transmission member 4 is similar to that of the handle of a traditional miniature circuit breaker. The closing button 20 and the opening button 21 are linked with the transmission member 4 through a connecting rod. The connecting rod mechanism can be an existing four-bar or Existing solutions such as multi-links.

One improvement of the circuit breaker of the present invention is that the button mechanism 2 includes a closing button 20 and an opening button 21. The user can respectively press the closing button 20/opening button 21 to drive the circuit breaker to close/open, and the closing button 20 and the opening button 21 move in the opposite direction, that is, when the closing button 20/opening button 21 is pressed toward the inside of the circuit breaker shell 1 to close/open the circuit breaker, the corresponding opening button 21/closing button at the same time 20 moves to the outside of the circuit breaker housing 1, that is to say, the user can distinguish the state of the circuit breaker (closed or open state) by observing the state of the closing button 20 and the opening button 21; Compared with the circuit breaker that presses/pulls the button mechanism to realize the closing/opening of the circuit breaker, the circuit breaker of the present invention realizes the closing/opening of the circuit breaker by pressing the button, thus avoiding the situation that the circuit breaker is unplugged by mistake Occurs. Second, by observing the state of the closing button 20 and the opening button 21, the state of the circuit breaker can be judged. Therefore, there is no need to set a separate opening and closing indicating device, which simplifies the structure of the circuit breaker and saves the internal space of the circuit breaker. , It is also conducive to the development trend of miniaturization of circuit breakers.

Preferably, as shown in FIGS. 10-24, the circuit breaker of the present invention further includes a locking mechanism and an unlocking mechanism arranged inside the circuit breaker housing 1. As shown in Figures 10-18, the locking mechanism includes a first locking member 1a with one end protruding outside the circuit breaker housing 1. At the same time, the circuit breaker housing 1 is provided with a locking member opening 17 that cooperates with the locking mechanism. The assembly position housing of the assembly position is provided with an assembly limit hole. When the circuit breaker is assembled in place, the locking part opening 17 of the plug-in circuit breaker corresponds to the assembly limit hole. When the plug-in circuit breaker is not installed in place The locking element opening 17 of the plug-in circuit breaker is misaligned with the assembly limiting hole, and the assembly position housing will block the locking element opening 17, which is a prior art in the art and will not be repeated here.

Another improvement of the present invention lies in the structure of the locking and cooperation. When the circuit breaker is in the open state, one end of the first locking member 1a protrudes from the opening 17 of the locking member and protrudes outside the circuit breaker housing 1. The first locking member 1a can be retracted into the circuit breaker housing 1 by the retracting external force, and the first locking member 1a is in positional coordination with the closing button 20 and/or the opening button 21 to lock the closing button 20 and/or the opening button 21 to open the circuit The circuit breaker cannot be closed; when the circuit breaker is in the closed state, one end of the first locking member 1a protrudes outside the circuit breaker casing 1, and is restricted by the closing button 20 and/or the opening button 21 and cannot be retracted into the circuit breaker casing 1Internal. When the first locking member 1a protrudes outside the circuit breaker housing 1, the first locking member 1a does not lock the closing button 20 and/or the opening button 21. At this time, the closing button 20 and/or the opening button 21 can operate normally. The opening and closing operations.

Preferably, as shown in Figures 10-17, before the circuit breaker is installed to the circuit breaker assembly, if the circuit breaker is in the closed state, one end of the first locking member 1a protrudes outside the circuit breaker housing 1, and the closed button 20 And/or the limit of the opening button 21 cannot be retracted into the inside of the circuit breaker casing 1, so that the circuit breaker cannot be inserted and installed in the circuit breaker assembly position in the closed state;

When the circuit breaker is installed in the circuit breaker assembly position, the assembly position housing of the circuit breaker assembly position exerts a retracting external force on the first locking member 1a during the assembly process, and the first locking member 1a is pressed to make it face the circuit breaker housing 1. Move in the internal direction, retract the inside of the circuit breaker housing 1, and make the first locking member 1a cooperate with the closing button 20 and/or the opening button 21 in a limit position, and locking the closing button 20 and/or the opening button 21 to make the circuit breaker Unable to close, making the circuit breaker unable to close during the assembly process to improve safety;

After the circuit breaker is assembled in place, the locking member opening 17 corresponds to the assembly limit hole, and the assembly position housing does not apply retracting external force to the first locking member 1a, and the first locking member 1a protrudes out of the circuit breaker housing 1 again, unlocking the button The mechanism 2 and the first locking member 1a are matched with the limit of the assembly position housing, so that the circuit breaker can perform normal closing and opening operations through the closing button 20 or the opening button 21, and it is not allowed to arbitrarily be assembled from the circuit breaker position To ensure that the vibration during transportation will not cause the circuit breaker to fall out of the circuit breaker assembly position;

After the circuit breaker is assembled in place, when the circuit breaker is in the closed state, the closing button 20 and/or the opening button 21 prevent the first locking member 1a from moving toward the inside of the circuit breaker housing 1, so that the circuit breaks in the closed state The circuit breaker cannot be removed from the circuit breaker assembly position.

Further, as shown in Figures 10-13 and 18, when the circuit breaker is in the open state, the operating unlocking mechanism can drive the first locking member 1a to move in the direction of the circuit breaker housing 1 and retract into the circuit breaker housing 1. The first locking member 1a is released from the position-limiting fit of the assembly position housing and the position-limiting fit of the button mechanism 2.

The locking mechanism of the circuit breaker of the present invention cooperates with the closing button 20 and/or the opening button 21. When installed in the circuit breaker assembly position, the first locking member 1a of the locking mechanism locks the closing button 20 and/or opening button. The switch button 21 prevents the circuit breaker from being closed due to the user's misoperation/erroneous touch during the installation process, and ensures the user's personal safety; moreover, when the circuit breaker is in the closed state, the switch button is closed 20 and/or the opening button 21 prevents the first locking member 1a from moving toward the inside of the circuit breaker housing 1, that is, once the circuit breaker is closed, it cannot be installed in the circuit breaker assembly position, or cannot be installed from the circuit breaker assembly position. It can be pulled out at will, thereby ensuring that the circuit breaker is installed in the circuit breaker assembly position or can be pulled out from the circuit breaker assembly position in the open state, thereby ensuring the personal safety of the user.

It should be pointed out that the "lock/unlock button mechanism 2" refers to the prevention/allowance of the closing button 20 and/or by the first locking member 1a and the button mechanism 2 performing limit coordination/unblocking coordination The opening button 21 moves in the design direction (ie, closing direction or opening direction).

After the circuit breaker is assembled to the circuit breaker assembly position and assembled in place, the first locking member 1a is in position-limiting cooperation with the assembly position housing of the circuit breaker assembly position; Pulling piece 2a, when the circuit breaker is in the open state, pulling the pulling piece 2a can drive the first locking piece 1a to move toward the inside of the circuit breaker casing 1, and retract the inside of the circuit breaker casing 1 to make the first locking piece 1a The limit coordination with the housing of the assembly position is released, and the circuit breaker can be pulled out from the assembly position of the circuit breaker. Further, as shown in FIGS. 10-13, the unlocking mechanism further includes a linkage member 3a. One end of the linkage member 3a is drivingly engaged with the first locking member 1a, and the other end is drivingly engaged with the drawing member 2a to pull the drawing member. 2a can drive the linkage member 3a to rotate, drive the first locking member 1a to move in the direction of the circuit breaker housing 1, retract into the circuit breaker housing 1 and release the limit matching with the assembly position housing. Compared with the existing circuit breaker that uses a pull button to release the limit coordination with the assembly position housing, another improvement of the present invention is that the circuit breaker is separately provided with the pull member 2a of the unlocking mechanism, and the button is not used. The mechanism unlocks the first locking member, thereby avoiding the situation that the circuit breaker is pulled out by mistake by pulling the button. Moreover, in the unlocking mechanism of the present invention, the drawing member 2a is driven to cooperate with the first locking member 1a through the linkage member 3a, thereby improving the fault tolerance of the unlocking mechanism, thereby reducing the impact on the drawing member 2a, the linkage member 3a and the first locking member 1a. The structural accuracy requirements of the locking member 1a are beneficial to reduce the difficulty of production and improve the production efficiency.

Preferably, as shown in Figures 21-24, the locking mechanism includes a second locking member 1b pivotally arranged on the circuit breaker housing 1, and the second locking member 1b includes a second locking end 13b; the closing button 20 is pressed to drive The operating mechanism closes the circuit breaker, and at the same time moves the opening button 21 to the outside of the circuit breaker housing 1. The closing button 20 and/or the opening button 21 drive the second locking member 1b to rotate, so that the second locking end 13b protrudes The circuit breaker casing 1 is outside, and the second locking member 1b is limited by the closing button 20 and/or the opening button 21 and cannot be retracted into the circuit breaker casing 1. Press the opening button 21 to drive the operating mechanism to open the circuit breaker, and at the same time The closing button 20 is moved toward the outside of the circuit breaker casing 1, and the opening button 21 and/or the closing button 20 drive the second locking member 1 b to rotate in the reverse direction, so that the second locking end 13 b is retracted into the circuit breaker casing 1.

Further, as shown in Figures 22 and 24, when the circuit breaker is closed, the opening button 21 drives the second locking member 1b to rotate so that the second locking end 13b protrudes outside the circuit breaker housing 1. When the circuit breaker is opened , The closing button 20 drives the second locking member 1b to rotate, so that the second locking end 13b is retracted into the circuit breaker housing 1. Of course, when the circuit breaker is closed, the second locking end 13b can also be driven by the closing button 20 to protrude outside the circuit breaker housing 1, and when the circuit breaker is opened, the second locking end 13b can be driven by the opening button 21 to retract into the circuit breaker housing. 1Internal. The locking mechanism of the circuit breaker of the present invention further includes a second locking member 1b. The second locking end 13b of the second locking member 1b protrudes outside the circuit breaker housing 1 when the circuit breaker is closed, thereby preventing the circuit breaker from being closed. It is installed in the circuit breaker assembly position in the state or pulled out of the circuit breaker assembly position in the closed state, which ensures the safety of electricity use and personal safety of the user.

It should be noted that the functions of the first locking member 1a and the second locking member 1b of the locking mechanism of the present invention have a certain degree of coincidence and are different. They can exist at the same time to improve the electrical safety of the circuit breaker. Of course, they can also Only the first locking member 1a or the second locking member 1b is provided. When the first locking piece 1a and the second locking piece 1b are provided at the same time, and the circuit breaker is closed outside the circuit breaker assembly position, both the first locking piece 1a and the second locking piece 1b protrude from the circuit breaker housing, and the circuit breaker cannot be installed In the circuit breaker assembly position; when the circuit breaker is installed in the circuit breaker assembly position, it is not installed in place, and the first locking piece 1a is pressed back into the circuit breaker shell by the assembly position housing to prevent the closing button from closing; the circuit breaker is installed in the circuit breaker After assembly position and installation in place, the switch is closed, the first locking piece 1a and the second locking piece 1b both protrude from the circuit breaker shell, and cannot be unlocked and cannot be pulled out from the circuit breaker assembly position; after the circuit breaker is installed in the circuit breaker assembly position and When the circuit breaker is opened, the second locking piece 1b is returned to the circuit breaker casing, and the first locking piece 1a still protrudes from the circuit breaker casing to prevent the circuit breaker from separating from the circuit breaker assembly position during transportation, etc.; after the circuit breaker is installed in the circuit breaker assembly position And the circuit breaker is opened, and the pulling piece 2a is pulled outwards, and the pulling piece 2a pulls the first locking piece 1a back into the circuit breaker housing to unlock, and continues to pull the first locking piece 1a to drive the circuit breaker out of the cabinet.

Preferably, as shown in Figs. 19, 20 and 25, it is an embodiment of the circuit breaker housing 1.

The circuit breaker housing 1 is an integral hexahedron mechanism, which includes a front side wall 1001 and a rear side wall 1002 arranged opposite to each other, a wire outlet hole 112, a button hole 110-111 and a drawing member operation hole 113 arranged on the front side wall 1001 , And the wire inlet hole 14 provided on the rear side wall 1002. The wire outlet hole 112, button holes 110-111, and puller operation hole 113 of the circuit breaker housing 1 are collectively arranged on the front side wall 1001, which is more convenient for users to operate. The wire inlet hole 14 is arranged on the rear opposite to the front side wall 1001. On the side wall 1002, it is beneficial to increase the creepage distance between the inlet end and the outlet end, and is beneficial to improve the insulation performance of the circuit breaker. Further, as shown in FIG. 25, the button holes 110-111 include a closing button hole 110 and an opening button hole 111 arranged side by side. The above structure facilitates the separate setting of the closing button and the opening button of the circuit breaker, so that the closing/opening operation of the circuit breaker can be realized through different structures, which is different from the existing closing/opening of the circuit breaker by pressing/pulling the button. Compared with the circuit breaker, it avoids the situation that the circuit breaker is pulled out with excessive force when the circuit breaker is opened by pulling the button.

The circuit breaker of the present invention will be further described below in conjunction with the drawings and specific embodiments of the specification.

As shown in Figures 1-3, the circuit breaker of this embodiment is a plug-in circuit breaker, which includes a circuit breaker housing 1 and a button mechanism 2 arranged inside the circuit breaker housing 1 and an operating mechanism connected to the operating button 2 , The moving contact 60 connected with the operating mechanism and the static contact 61 used in conjunction with the moving contact 60; operating the button mechanism 2 can drive the circuit breaker to close/open through the operating mechanism, so that the moving contact 60 and the static contact The contact 61 is closed/opened. Of course, as required, as shown in Figure 1, the circuit breaker of the present invention may also include a short-circuit protection mechanism 7, an overload protection mechanism, and an arc extinguishing system 8 arranged inside the circuit breaker housing 1. The short-circuit protection mechanism 7 and the overload protection mechanism When the circuit breaker has a short circuit or an overload fault, the operating mechanism is driven to trip the circuit breaker to realize the basic circuit protection function; the arc extinguishing system 8 is used to extinguish the moving contact 60 and the static contact 61 when they are broken. The arc is conducive to improving the breaking performance of the circuit breaker and improving the safety of electricity. Further, the short-circuit protection mechanism 7 and the overload protection mechanism are electromagnetic trippers and bimetallic strips that are driven to cooperate with the operating mechanism, respectively, and the arc extinguishing system 8 is an arc extinguishing system arranged on the side of the movable contact and the static contact 61. The chamber includes a side wall of the arc extinguishing chamber and a plurality of arc extinguishing grids arranged between the side walls of the arc extinguishing chamber.

Preferably, as shown in Figs. 1-9, it is an embodiment of the operating mechanism.

As shown in Figures 1 and 2, the circuit breaker housing 1 includes a closing button hole 110 and an opening button hole 110 provided thereon; the button mechanism 2 includes closing buttons slidably arranged in the circuit breaker housing 1. The button 20 and the opening button 21. The closing button 20 includes a closing button operating end which is arranged at one end and slidably arranged in the closing button hole 110. The opening button 21 includes one end of which is slidably arranged on the opening button. The opening button operating end in the operating hole 111; when pressing the closing button operating end/opening button operating end toward the inside of the circuit breaker housing 1 to close/open the circuit breaker, the opening button operating end/closes at the same time The operating end of the brake button moves toward the outside of the circuit breaker housing 1.

Further, as shown in Figures 1 and 2, the operating mechanism includes a link mechanism, a transmission member 4 pivotally arranged on the circuit breaker housing 1, and a lever mechanism. The link mechanism includes a closing link 30, an opening link Rod 31 and transmission connecting rod 32; the other end of the closing button 20 is drivingly connected to the transmission member 4 through the closing connecting rod 30, the other end of the opening button 21 is drivingly connected to the driving member 4 through the opening connecting rod 31, and the transmission member 4 Drive connected to the lever mechanism through the transmission link 32, the lever mechanism is connected to the moving contact 60 of the circuit breaker; when the closing button 20 is pressed toward the inside of the circuit breaker housing 1 to close the circuit breaker, the closing button 20 through the closing link 30 to drive the transmission member 4 to rotate in the first direction, while the rotation of the transmission member 4 through the opening link 31 drives the opening button 21 to move to the outside of the circuit breaker housing 1; to the inside of the circuit breaker housing 1 When the opening button 21 is pressed to open the circuit breaker, the opening button 21 drives the transmission member 4 to rotate in the second direction through the opening link 31, and at the same time, the rotation of the transmission member 4 drives the closing button through the closing link 30 20 moves toward the outside of the circuit breaker housing 1, and the first direction and the second direction are opposite to each other.

Further, as shown in Figures 1 and 2, the lever mechanism includes a jumper 50, a lock 51 and a rotating plate 52. The rotating plate 52 is pivotally arranged on the circuit breaker housing 1. The jumper 50 and the lock 51 lock They are buckled and pivotally arranged on the rotating plate 52. The rotating plate 52 is connected to the movable contact 60. The transmission member 4 is drivingly connected to the jumper 50 through the transmission connecting rod 32; the transmission member 4 rotates in the first direction. The lever mechanism is driven to rotate in the first direction through the transmission connecting rod 32, and the lever mechanism drives the movable contact 60 to swing to realize the closing of the circuit breaker; the transmission member 4 rotates in the second direction and drives the tripping buckle through the transmission connecting rod 32 50 rotates in the second direction, so that the trip 50 and the lock 51 release the lock, and realize the opening of the circuit breaker; when the circuit breaker has a short circuit or an overload fault, the short circuit protection mechanism 7 or the overload protection mechanism actuates to drive the lock. 51. Release the hasp coordination of the trip 50 and the lock 51, so that the circuit breaker is tripped and tripped to realize protection. Further, the moving contact 60 is connected to the rotating plate 52 through an elastic member to realize the overtravel of the moving contact 60. Of course, the linkage mechanism can also adopt other solutions, which all fall within the protection scope of the present invention. Preferably, as shown in FIG. 6, it is an embodiment of the transmission member 4.

As shown in FIG. 6, the transmission member 4 includes a transmission member shaft hole 400, a first connection hole 40, a second connection hole 41 and a third connection hole 42, the first connection hole 41, the second connection hole 41 and the third connection hole 41. The connecting holes 42 are respectively located at the three vertices of a triangle, the transmission member shaft hole 400 is arranged in the middle of the transmission member 4, the first connecting hole 40 and the third connecting hole 42 are arranged on the side of the transmission member shaft hole 400, and the second connecting hole 41 is arranged on the other side of the transmission member shaft hole 400; the transmission member 4 is pivoted on the circuit breaker housing 1 through its transmission member shaft hole 400, and the transmission member 4 passes through the first connecting hole 40 and the second connecting hole respectively. 41 and the third connecting hole 42 are connected with the closing connecting rod 30, the opening connecting rod 31 and the transmission connecting rod 32.

Specifically, in the direction shown in Fig. 1, the upper, lower, left, and right sides of Fig. 1 are the upper, lower, left, and right sides of the circuit breaker, and the side facing the reader in Fig. 1 is the front side of the circuit breaker; The upper side wall of the circuit breaker housing 1 is provided with a closing button hole 110 and an opening button hole 111; the upper end of the closing button 20 is the closing button operating end, which is slidably arranged in the closing button hole 110, The upper end of the opening button 21 is the operating end of the opening button, which is slidably arranged in the opening button hole 111; the lower end of the closing button 20 is drivingly connected to the first connecting hole 40 at the right end of the transmission member 4 through the closing link 30, The lower end of the opening button 21 is drivingly connected to the second connection hole 41 at the left end of the transmission member 4 through the opening link 31, and the third connection hole 42 at the right end of the transmission member 4 is drivingly connected to the trip buckle 50 through the transmission link 32, and the transmission member 4 The transmission member shaft hole 400 therein is pivoted on the transmission member mounting shaft 104 on the circuit breaker housing 1; the closing button 20 is pressed down, and the closing button 20 drives the transmission member 4-way through the closing link 30 Rotate in the clockwise direction (first direction), the transmission member 4 simultaneously drives the movable contact 60 to swing clockwise through the transmission link 31, the lock buckle 50 and the lock buckle 51, and the rotating plate 52 to close the static contact 61 , The circuit breaker enters the closing state; press the opening button 21 downward, the opening button 21 drives the transmission member 4 to rotate counterclockwise (the second direction) through the opening link 31, and the transmission member 4 passes through the transmission link 31 drives the trip buckle 50 to swing counterclockwise to release the lock buckle coordination with the lock buckle 51, and the rotating plate 52 drives the movable contact 60 to swing counterclockwise, disconnects from the static contact 61, and the circuit breaker enters the open state.

Preferably, the operating end of the closing button and the operating end of the opening button are respectively provided with a first identification and a second identification for identifying the opening and closing state, and both the first identification and the second identification include a color identification and/or a symbol identification , The first identification is used to identify the closing state, and the corresponding second identification is used to identify the opening; or the first identification is used to identify the opening state, and the second identification is used to identify the closing state. Further, the color identification and text identification of the operating terminal of the closing button and the operating terminal of the opening button are different; for example, the color identification and the symbol identification of the operating terminal of the closing button may be red/opening symbol (O), respectively, The color identification and symbol identification of the operating end of the opening button can be respectively green/close symbol (I); when the circuit breaker is closed, the operating end of the closing button enters the closing button hole 110, and the operating end of the opening button is highlighted On the opening button hole 111, it can be judged that the circuit breaker is in the closed state through the green color mark and/or the closing symbol (I); on the contrary, when the circuit breaker is opened, the opening button operating end enters the opening In the button hole 111, the operating end of the closing button is highlighted on the closing button hole 110, and the circuit breaker can be judged to be in the open state by the red color mark and/or the opening symbol (O). The first identification and the second identification on the operating end of the closing button and the operating end of the opening button are beneficial for the user to more intuitively observe and judge the state of the circuit breaker, and are beneficial to improve the user's electricity safety.

Preferably, as shown in Figures 3-5 and 7-9, the closing button 20 and the opening button 21 of the circuit breaker of the present invention are both a long strip as a whole, and the closing button 20 and the opening button 21 are arranged in parallel and slide linearly. Installed in the circuit breaker housing 1, it also includes a first track mechanism and a second track mechanism for defining the movement paths of the closing button 20 and the opening button 21, respectively.

As shown in Figures 3-5, it is a first embodiment of the first track mechanism and the second track mechanism.

As shown in Figures 3-5, the first track mechanism includes a closing button track table 201 arranged on the closing button 20 and a closing button track groove 101 arranged on the circuit breaker shell, and the closing button track table 201 The opening button 21 is slidably arranged in the closing button rail groove 101; the second rail mechanism includes an opening button rail groove provided on the circuit breaker housing 1, and the opening button 21 is slidably arranged in the opening button rail groove. Further, as shown in FIG. 3, the circuit breaker housing 1 includes a first rib 105. The closing button track groove 101 and the opening button track groove are respectively located on both sides of the first rib 105; the closing button track groove 105 It is surrounded by a first rib 105 and a side wall of the circuit breaker housing 1 opposite to the first rib 105; the circuit breaker housing 1 also includes a second rib 102 opposite to the first rib 105, and the opening button track groove is formed by The first rib 105 and the second rib 102 are enclosed.

Preferably, as shown in Figure 4, the closing button 20 includes a closing button operating portion 202 and a closing button transmission portion 203. One end of the closing button operating portion 202 is the closing button operating end, and the other end is driven by the closing button. The part 203 is stacked and connected. The other end of the closing button transmission part 203 is provided with a closing button connection hole 204 and a closing button track table 201. The closing button connection hole 204 is connected to one end of the closing link 30 of the operating mechanism, and the closing button track The platform 201 and the closing button operating part 202 are located on the same side of the closing button transmission part 203. Specifically, as shown in the direction shown in Figure 4, the left end of the closing button operating portion 202 is the closing button operating end, the right end is stacked and connected to the left end of the closing button transmission portion 203, and the closing button transmission portion 203 is provided with a closing button on the right end. The connecting hole 204 and the closing button track base 201, the closing button transmission part 202 and the closing button track base 201 are located on the lower side of the closing button transmission part 203. Of course, the other end of the closing button operating portion 202 can also be horizontally connected with the closing button transmission portion 203, and located on the same plane, instead of a stacked connection structure.

Preferably, as shown in FIG. 5, the opening button 21 includes an opening button operation part 212 and an opening button transmission part 213. One end of the opening button operation part 212 is the opening button operation end, and the other end is the opening button operation part. One end of the transmission part 213 is connected, and the other end of the opening button transmission part 213 is provided with an opening button connection hole 214, and the opening button connection hole 214 is connected to one end of the opening link 31 of the operating mechanism. Specifically, as shown in the direction shown in FIG. 5, the opening button 21 is generally elongated, the left end of the opening button operating part 212 is the opening button operating end, and the right end is connected to the opening button transmission part 213, and the opening button transmission part An opening button connection hole 214 is provided at the right end of the 213, and the opening button connection hole 214 is located on the lower side of the opening button transmission part 213.

Specifically, as shown in FIG. 3, the first rib 105 is arranged on the circuit breaker housing 1, and the left side wall of the circuit breaker housing 1 encloses the switch-on button track groove 101, and the second rib 102 is arranged on the first rib. On the right side of 105, the two are enclosed in a track groove for the switch button; the operating end of the switch button is slidably arranged in the switch button hole 110, while the switch button track table 201 is slidably arranged in the switch button track groove 101 to limit the switch The moving path of the brake button 20; the operating end of the opening button is slidably arranged in the opening button hole 111, while the opening button transmission part 213 is slidably arranged between the first rib 105 and the second rib 102 to define the opening button 21's moving path.

As shown in Figures 7-9, it is a second embodiment of the first track mechanism and the second track mechanism.

As shown in Figures 7-9, the first track mechanism includes a closing button track table 201 arranged on the closing button 20 and a closing button track groove 101 arranged on the circuit breaker housing 1. The closing button track table 201 is slidably arranged in the closing button track groove 101; the second track mechanism includes an opening button rail bar 205 arranged on the closing button 20 and arranged along the length direction of the closing button 20, and an opening button rail 205 arranged on the opening button 21 The opening button track groove 2150 on the upper side, the opening button track groove 2150 and the opening button track bar 205 slidingly fit.

Preferably, as shown in FIG. 8, the closing button 20 includes a closing button operating portion 202, a closing button transmission portion 203, and an opening button track bar 205. One end of the closing button operating portion 202 is the closing button operating end. , The other end is stacked and connected with one end of the closing button transmission part 203, the other end of the closing button transmission part 203 is provided with a closing button connection hole 204 and a closing button track table 201, and the opening button track bar 205 is arranged in the closing button driving part 203 side and the opening button track bar 205 and the closing button operating portion 202 are located on the same side of the closing button transmission portion 203, and the closing button connection hole is connected to one end of the closing link 30 of the operating mechanism. Specifically, as shown in the direction shown in Figure 8, the upper end of the closing button operating portion 202 is the closing button operating end, the lower end is stacked and connected to the upper end of the closing button transmission portion 203, and the closing button transmission portion 203 is provided with a closing button at the lower end. The rail platform 201 and the closing button connection hole 204, and the opening button rail bar 205 is arranged between the closing button operation part 202 and the closing button connection hole 204 and located on the right side of the closing button transmission part 203, respectively connected to the two, The brake button track table 201 is arranged on the left side of the closing button transmission part 203. Further, as shown in the direction shown in FIG. 8, a closing button foot 206 is provided on the left side of the upper end of the closing button transmission part 203.

Preferably, as shown in FIG. 9, the opening button 21 includes an opening button operating portion 212, an opening button transmission portion 213, an opening button rail portion 215, and an opening button connection hole 214, and an opening button operating portion 212 One end is the operating end of the opening button, the other end is connected to one end of the opening button transmission part 213, the other end of the opening button transmission part 213 is provided with an opening button connection hole 214, and the opening button track part 215 is arranged in the opening button transmission part On the side 213, an opening button rail groove 2150 is provided on the side of the opening button rail portion 215 facing the closing button transmission portion 203. Specifically, as shown in the direction shown in Figure 9, the left end of the opening button operating part 212 is the opening button operating end, the right end is connected to the left end of the opening button transmission part 213, and the right end of the opening button transmission part 213 is provided with an opening button connection. In the hole 214, the opening button rail part 215 is arranged on the rear side of the right end of the opening button transmission part 213, and the opening button rail part 215 is provided with an opening button rail groove 2150 on the lower side.

Specifically, as shown in FIG. 7, the first track mechanism includes a third rib 1010 arranged on the circuit breaker housing 1, and the middle of the third rib 1010 is provided with a closing button track groove 101 along its length; FIG. 8 As shown, the closing button 20 also includes a closing button foot 206. The closing button foot 206 is arranged at one end of the closing button transmission portion 203 connected to the closing button operating portion 202, and is connected to the closing button operating portion. 202 are respectively located at the two ends of the closing button transmission part 203, and the opening button track bar 205 is located between the closing button operating part 202 and the closing button connection hole 204, respectively connected to the two; the closing button operating end is slidably arranged In the closing button hole 110, the closing button foot 206 is slidingly fitted with the third rib 1010, and the closing button track table 201 is slidably arranged in the closing button track groove 101 to limit the movement path of the closing button 20; The operating end of the opening button is slidably arranged in the opening button hole 111, the opening button rail 215 is placed on the side of the closing button operating portion 203, and the opening button rail groove 2150 is slidingly matched with the opening button rail 205 to define The movement path of the opening button.

Preferably, as shown in FIGS. 10-24, the circuit breaker of the present invention further includes a locking mechanism arranged inside the circuit breaker housing 1, and the locking design of the locking mechanism is one of the improvements of the present invention. .

Preferably, as shown in FIGS. 10-17, the locking mechanism includes a first locking member 1a with one end protruding outside the circuit breaker housing 1, and the circuit breaker housing 1 includes a locking member opening that cooperates with the first locking member 1a. 17. One end of the first locking member 1a extends to the outside of the circuit breaker housing 1 through the locking member opening 17. When the circuit breaker is in the open state, the first locking member 1a can be retracted into the circuit breaker housing 1 when the circuit breaker is retracted by an external force ; For example, when the circuit breaker is installed in the circuit breaker assembly position, during the assembly process, the assembly position housing of the circuit breaker assembly position presses the first locking member 1a to move it toward the interior of the circuit breaker housing 1 (assembly position housing Apply a retracting external force to the first locking member 1a), so that the first locking member 1a is in positional coordination with the closing button 20 and/or the opening button 21, and locking the closing button 20 and/or the opening button 21 so that the circuit breaker cannot After closing and the circuit breaker is assembled in place, the locking member opening 17 corresponds to the assembly limit hole of the assembly position housing, and the first locking member 1a protrudes from the locking member opening 17 to the outside of the circuit breaker housing 1 and is released and closed The limit coordination of the button 20 and/or the opening button 21, the unlocking of the button mechanism and the limit coordination of the first locking member 1a with the assembly limit hole of the assembly position housing, so that the circuit breaker can pass the closing button 20 or the opening button 21 Carry out normal closing and opening operations, and it is not allowed to unplug it from the assembly position at will.

Further, as shown in FIGS. 14-17, the closing button 20 and/or the opening button 21 includes a button limiting slot 216 for limiting and cooperating with the first locking member 1a, and the first locking member 1a includes The button limit slot 216 matches the first locking member limit table 14a; when the circuit breaker is in the closed state, the button limit slot 216 and the first locking member limit table 14a are arranged in a staggered manner, and the closing button 20 and/or The opening button 21 prevents the first locking member 1a from moving toward the inside of the circuit breaker housing 1; when the circuit breaker is in the opening state, the button limit slot 216 is arranged opposite to the first locking member limit table 14a, and the first locking The member 1a can move toward the inside of the circuit breaker housing 1 so that the first locking member limit table 14a slides into the button limit slot 216.

Preferably, as shown in Figures 10-15, the closing button 20 and the opening button 21 are arranged in parallel and linearly slidably installed in the circuit breaker housing 1, and the first locking member 1a is linearly movably installed in the housing 6. Inside, the moving direction of the closing button 20 and the opening button 21 and the moving direction of the first locking member 1a are perpendicular to each other. Further, as shown in FIGS. 10-15, the locking mechanism further includes a first return spring 5a arranged between the first locking member 1a and the circuit breaker housing 1, and the first return spring 5a exerts an action on the first locking member 1a. Force to keep one end of the first locking member 1a protruding out of the circuit breaker casing 1 without interference of other external forces. When the circuit breaker is in the open state, the first locking member 1a can be retracted into the circuit breaker casing 1 when the circuit breaker is retracted by an external force. internal.

Specifically, as shown in Figures 14 and 15, the closing button 20 and the opening button 21 can move left and right, and both move in opposite directions synchronously, and the first locking member 1a can move up and down; as shown in Figure 14 , The circuit breaker is in the closed state, the button limit slot 216 of the opening button 21 and the first locking member limit table 14a of the first locking member 1a are arranged in an offset manner, and the first locking member 1a cannot move downward; As shown in Figure 15, the circuit breaker is in the open state, the button limit slot 216 of the opening button 21 is arranged opposite to the first locking member limit table 14a of the first locking member 1a, and the first locking member 1a can be downward Move, so that the first locking member limit table 14a slides into the button limit slot, thereby restricting the left and right movement of the opening button 21 and the closing button 20. It should be pointed out that the button limit slot 216 can also be provided on the closing button 20, as long as it meets the requirement that the button limit slot 216 and the first locking member limit table 14a are arranged in a misaligned manner and the circuit breaker is closed. In the open state of the switch, the button limit slot 216 and the first locking member limit table 14a can be arranged opposite to each other.

Further, as shown in Figures 14 and 15, the closing button 20 and the opening button 21 are arranged in parallel, and the closing button 20 and the first locking member 1a are both located above the opening button 21, that is, the closing button 20 and The first locking member 1a is located between the opening button 21 and the opening 17 of the locking member. The first locking member 1a is located on one side of the closing button 20. The first locking member 1a includes a first locking member limiting table 14a that matches with the button limiting groove 216. The closing button 20 is provided with a first locking member 1a for avoiding the first locking member 1a. A closing button escape slot 206 of a locking member limit platform 14a. When one end of the first locking member 1a extends outside the circuit breaker housing 1, the first locking member limit table 14a is located in the closing button avoiding groove 206, and the width of the closing button avoiding groove 206 is in the movement of the closing button 20 The direction is much larger than the width of the first locking member limit table 14a, the closing button 20 will not contact the first locking member limit table 14a when opening and closing moves, so that the closing button 20 and the opening button 21 can move Carry out driving the circuit breaker to close and open; when the circuit breaker is in the closed state, the button limit slot 216 and the first locking member limit table 14a are arranged in a staggered setting, and the first locking member limit table 14a is located at the closing button In the avoidance slot 206, the opening button 21 prevents the first locking member 1a from moving toward the inside of the circuit breaker housing 1. When the circuit breaker is in the opening state, the button limit slot 216 is opposite to the first locking member limit table 14a When configured, the first locking member 1a can move toward the inside of the circuit breaker housing 1 under the retracted external force, so that the first locking member limit table 14a slides into the button limit slot 216.

In this preferred embodiment, the closing button 20 and the first locking member 1a are arranged on the same plane, and both are located above the opening button 21, making the structure more compact. The closing button 20 is provided with a closing button escape slot 206. Avoid the first locking member limit table 14a of the first locking member 1a, so that the closing button 20 is not affected when closing or opening; and the first locking member 1a can also be close to the opening button 21 , The unlocking and locking cooperation makes the distance that the first locking member 1a needs to move is also short. The first locking member limit table 14a corresponds to the button limit slot 216 of the opening button 21 during opening, and the first locking member 1a can Compressed into the circuit breaker housing 1, when closing, the first locking member limit table 14a is misaligned with the button limit slot 216 of the opening button 21, and the first locking member limit table 14a is limited by the opening button 21. The first locking member 1a cannot be compressed into the circuit breaker housing 1, and cannot be pulled out from the circuit breaker assembly position in the closed state.

Preferably, as shown in FIGS. 10-13 and 18, the circuit breaker of the present invention further includes an unlocking mechanism drivingly connected to the first locking member 1a; when the circuit breaker is in the open state, operating the unlocking mechanism can drive the first lock The piece 1a moves to the inside of the circuit breaker housing 1, retracts into the circuit breaker housing 1, releases the limit coordination with the assembly position housing and cooperates with the button mechanism 2; when the circuit breaker is in the closed state, the switch is closed The button 20 and/or the opening button 21 prevent the first locking member 1a from moving toward the inside of the circuit breaker housing 1, to ensure that it cannot be unlocked in the closed state, and to ensure the safety of electricity.

Further, as shown in FIGS. 10-13, the unlocking mechanism includes an independent drawing member 2a drivingly cooperated with the first locking member 1a. When the circuit breaker is in the open state, pulling the drawing member 2a can drive the first locking The piece 1a moves toward the inside of the circuit breaker housing 1, so that the first locking piece 1a is released from the position-limiting fit of the assembly position housing. Further, as shown in Figures 10-13, the unlocking mechanism further includes a linkage 3a and a lever support 4a provided on the circuit breaker housing 1. One end of the linkage 3a is drivingly connected to the first locking member 1a, and the other end is connected to the puller. The pulling piece 2a is driven to cooperate, and the middle part is in contact with the lever support 4a; pulling the pulling piece 2a can drive the linkage 3a to rotate with the lever support 4a as the fulcrum, and the linkage 3a drives the first locking piece 1a toward the inside of the circuit breaker housing 1. Move and release the limit matching with the housing of the assembly position. As another embodiment, the unlocking mechanism may not be provided with the lever support 4a, but the linkage member 3a is matched through a waist-shaped hole provided on the linkage member 3a and the linkage member shaft fixed on the circuit breaker housing 1. Rotatingly installed in the circuit breaker housing 1, one end is matched with the pulling piece 2a, and the other end is matched with the first locking piece 1a. When the pulling piece 2a is pulled, the linkage 3a is driven to rotate, so that the other end of the linkage 3a acts on the first locking piece. On a locking member 1a, the first locking member 1a is retracted into the circuit breaker housing 1.

Compared with the existing circuit breaker that uses a pull button to release the limit coordination with the assembly position housing, another improvement of the present invention is that the circuit breaker is separately provided with the pull member 2a of the unlocking mechanism, and the button is not used. The mechanism unlocks the first locking member, thereby avoiding the situation that the circuit breaker is pulled out by mistake by pulling the button. It should be pointed out that the independent drawing member 2a of the present invention is not only applicable to the solutions of the closing button 20 and the opening button 21 of the present invention, but also can be used in the case where one button realizes the opening and closing operation.

It should be pointed out that, as an alternative embodiment, the first locking member 1a may not be provided with the first locking member limiter 14a, and the drawing member 2a can be driven regardless of whether the circuit breaker is closed or opened. The first locking member 1a moves toward the inside of the circuit breaker housing 1.

Preferably, as shown in FIG. 17, it is the first embodiment of the first locking member 1a.

As shown in Figure 17, the first locking member 1a includes a first locking member body 10a, a first locking member stop 11a, a first locking member limiting table 14a, and a locking member spring limiting structure 15a; The locking member stop 11a and the first locking member limiting table 14a are respectively provided on both sides of the first locking member main body 10a, and the locking member spring limiting structure 15a is provided on the side of the first locking member main body 10a away from the locking member opening 17 One end of the first locking member body 10a protrudes outside the circuit breaker housing 1 through the locking member opening 17 provided on the circuit breaker housing 1, and the other end is connected to the first return spring 5a through the locking member spring limiting structure 15a, One end of the first return spring 5a is in position-limiting cooperation with the locking member limiting structure 15a, and the other end is in position-limiting cooperation with the circuit breaker housing 1. The first locking member stop 11a is in position-limiting cooperation with the circuit breaker housing 1 to prevent the first locking member 1a Escape through the opening 17 of the locking member. Further, as shown in FIG. 17, the first locking member 1a further includes a first locking member actuated portion 130a connected to the linkage member 3a of the unlocking mechanism, and a first locking member is provided in the middle of the first locking member actuated portion 130a. One end of the linkage member 3a is inserted into the first locking member connecting hole 13a; the first locking member actuated portion 130a is arranged on the side of the first locking member body 10a and is located between the first locking member body 10a and the first locking member body 10a. The lever supports between 4a. Further, as shown in the figure, the locking member spring limiting structure 15a is a spring limiting groove.

Preferably, as shown in FIG. 16, it is a second embodiment of the first locking member 1a.

As shown in FIG. 16, the difference between the first locking member 1a of this embodiment and the first embodiment is that there is no protruding first locking member receiving portion 130a, but one end of the first locking member body 10a protrudes from the circuit breaker. Outside the housing 1, one side of the other end is provided with a first locking member connecting hole 13a as a first locking member actuated portion 130a. Further, as shown in FIG. 17, the lock spring limiting structure 15 is a spring limiting boss. Obviously, the first locking member 1a can be provided with other similar structures as required.

Preferably, as shown in Figs. 10, 11A, 11B, and 18, there are multiple embodiments of the drawing member 2a.

The drawing member 2a includes a drawing member operating portion 20a, a drawing member first transition portion 21a, and a drawing member driving portion 24a. The drawing member operating portion 20a is perpendicularly connected to the drawing member first transition portion 21a. The drawing member driving portion 24a is connected obliquely to the first transition portion 21a of the drawing member; the drawing member operating portion 20a constitutes an operating portion that is convenient for manual or tool drawing, and the first transition portion 21a of the drawing member is parallel to the drawing member. The moving direction of the member 2a constitutes a sliding support, and the pulling member driving portion 24a is inclined to drive the linkage 3a to drive the first locking member 1a to retract into the circuit breaker housing 1. One embodiment is that the drawing member 2a only includes the drawing member operating portion 20a, the drawing member first transition portion 21a, and the drawing member driving portion 24a. At this time, the drawing member 2a forms an approximate Z-shaped structure or U-shape. The Z-shaped structure occupies a relatively large space, and the sliding fit of the U-shaped structure and the locking mechanism is less stable.

A further preferred embodiment is shown in FIG. 11A, which further includes a second transition portion 22a of the drawing member connected between the first transition portion 21a of the drawing member and the driving portion 24a of the drawing member, and the second transition portion 22a of the drawing member is connected to The drawing member operating portion 20a is parallel and perpendicular to the drawing member first transition portion 21a. The drawing member second transition portion 22a and the drawing member operating portion 20a are both located on one side of the drawing member first transition portion 21a to form a U shape Type, the space occupied by the drawing member 2a is reduced by bending, and the second transition portion 22a of the drawing member can be used to pull out the circuit breaker and to limit the position of the drawing member 2a. The side far away from the drawing member operating portion 20a and close to the first transition portion 21a of the drawing member is inclined and bent.

A further preferred embodiment is shown in FIG. 11B, which further includes a third transition portion 23a of a drawing member disposed between the second transition portion 22a of the drawing member and the drawing member driving portion 24a, and the third transition portion 23a and the drawing member The first transition portion 21a is arranged in parallel for balancing the sliding of the drawing member 2a and adjusting the position of the drawing member driving portion 24a; and/or, the drawing member holding portion 25a connected to the drawing member driving portion 24a, drawing The part holding part 25a is parallel to the first transition part 21a of the drawing part. The inclined drawing part driving part 24a gradually drives the linkage 3a to drive the first locking part 1a to retract into the circuit breaker housing 1. After the drawing part holding part 25a passes The first locking member 1a of the linkage 3a is maintained in the retracted position.

As shown in FIG. 18 in a preferred embodiment of the drawing member 2a, the drawing member 2a includes a drawing member operating portion 20a, a drawing member first transition portion 21a, a drawing member second transition portion 22a, and a The third transition part 23a of the drawing member, the driving part 24a of the drawing member and the holding part 25a of the drawing member; the operating part 20a of the drawing member and the second transition part 22a of the drawing member are arranged in parallel. , The third transition portion 23a of the drawing member and the drawing member holding portion 25a are arranged in parallel and perpendicular to the drawing member operating portion 20a, the drawing member driving portion 24a is arranged obliquely, and is connected to the third transition portion 23a of the drawing member by bending One end is the first end of the driving part, and the end bent and connected with the puller holding part 25a is the second end of the driving part. The first end of the driving part is far away from the first locking part 1a relative to the second end of the driving part. Further, the drawing member 2a is integrally formed, and is formed by stamping and bending a metal material.

Preferably, as shown in FIGS. 10-13, the circuit breaker housing 1 further includes a drawing member limiting rib 6a provided between the drawing member operating portion 20a and the drawing member second transition portion 22a; After the pulling piece 2a drives the first locking piece 1a to retract into the circuit breaker housing 1 to release the limit fit with the assembly position housing, continue to pull the pulling piece 2a to make it fit with the pulling piece limit rib 6a in a limit fit , Unplug the circuit breaker from the circuit breaker assembly position.

Specifically, as shown in the directions shown in Figures 10, 11A and 11B, the right end of the first locking member 1a protrudes outside the circuit breaker housing 1, and the left end is connected to the right end of the linkage 3a and is connected to the circuit breaker housing 1 through the first return spring 5a. The middle part of the linkage member 3a is in contact with the lever support 4a provided above the first locking member 1a. The left end of the linkage member 3a is in driving cooperation with the drawing member driving portion 24a. The upper and lower ends of the drawing member driving portion 24a are respectively the first driving portion. End and the second end of the driving part; when the circuit breaker is in the open state, pull the drawing member 2a upwards until the drawing member driving part 24a is in contact with the left end of the linkage 3a (as shown in Figure 12), as shown in Figure 13 As shown, continuing to pull the drawing piece 2a can drive the linkage piece 3a to rotate clockwise with the lever support 4a as the fulcrum. Retracted inside the circuit breaker housing 1 and engaged with the button mechanism 2 in a position limit, thereby releasing the position limit cooperation between the first locking member 1a and the assembly position housing, and the drawing member holding portion 25a is in position limit cooperation with the left end of the linkage member 3a, The first locking member 1a is held inside the circuit breaker casing 1.

Preferably, as shown in FIG. 11A, the puller 2a is made of a metallic magnetic material, and the unlocking mechanism further includes a puller holding magnet provided in the circuit breaker housing 1 to cooperate with the puller operating portion 20a, and the holding magnet It is installed in the groove 105 on the circuit breaker housing 1 and is magnetically engaged with the puller operating portion 20a. The pulling piece holding magnet can reliably hold the pulling piece operating part 20 in the circuit breaker housing. When the pulling piece 2a does not need to be operated, it ensures the clean and beautiful appearance of the circuit breaker, and avoids the pulling piece 2a from being unnatural. It is expected that the case 1 of the circuit breaker protrudes, resulting in a misoperation or damage to the drawing member 2a. Further, when the operating puller 2a is pulled out into position, the second transition portion 22a of the puller can also be magnetically engaged with the puller holding magnet, so that the puller is maintained at the pulled out position outside the circuit breaker housing 1.

It should be pointed out that the "magnetic engagement" means that the drawing member operating portion 20a is attracted by the drawing member holding magnet. The drawing member 2a is made of a metallic magnetic material, which means that it can be magnetically attracted by the drawing member and is not necessarily a magnet.

Preferably, as shown in Figures 1, 19, 20, and 25, the circuit breaker housing 1 further includes a wire outlet hole 112 and a drawing member operation hole 113, the wire outlet hole 112, a drawing member operation hole 113, and a closing button hole 110 The opening button hole 111 is located on the same side wall of the circuit breaker housing 1. The circuit breaker housing 1 also includes a pullout groove 16, and the puller operating portion 20a of the puller 2a is arranged in the puller operating hole 113 , So that the drawing member 2a does not protrude out of the circuit breaker housing 1 when it is not pulled out, the drawing member cutting groove 16 is connected to the drawing member operating hole 113, and the drawing operation is performed through the drawing member cutting groove 16.

Further, in a preferred solution, the puller groove 16 is provided between the wire outlet hole 112 and the puller operating hole 113 and is blocked by the wire outlet wire. Both ends of the puller groove 16 are connected to the wire hole 112 and the puller respectively. The operating hole 113 is connected, and only after the outlet wire is removed, can the drawing member operating portion 20a be pulled out of the drawing member operating hole 113 at the drawing member cutting groove 16; or, as another preferred solution, The puller pull slot 16 is arranged between the opening button hole 111 and the puller operating hole 113. When the circuit breaker is in the closed state, the opening button 21 covers the puller pull slot 16, and the circuit breaker is in the open state. When the opening button 21 is moved to the inside of the circuit breaker housing 1 to open the pullout groove 16, then the pullout operation part 20a can be pulled out from the pullout operation hole 113 at the pullout groove 16 . When the outgoing wire is removed, the drawing member can be pulled out when the circuit breaker is in the open state. The above-mentioned structure ensures that the unlocking mechanism can unlock the first locking member 1a and the assembly only when the circuit breaker is in the open state. The limit coordination of the position shell prevents the circuit breaker from pulling the drawing piece 2a when the circuit breaker is closed, causing the drawing piece 2a to be damaged or the circuit breaker to be pulled out when the circuit breaker is energized, ensuring the safety of the user’s electricity use. .

Preferably, as shown in another drawing member embodiment shown in FIG. 11B, the drawing member 2a further includes a drawing member spring limiting portion 26a, a drawing member spring limiting portion 26a and a drawing member operating portion 20a They are arranged in parallel and are respectively located at both ends of the drawing member 2a; the unlocking mechanism further includes a drawing member return spring 7a arranged between the drawing member spring limiting portion 26a and the drawing member limiting rib 6a. The puller return spring 7a can reliably hold the puller holding portion 20a of the puller 2a in the circuit breaker housing. The drawing member spring limiting portion 26a is connected to the drawing member holding portion 25a by bending, or directly connected to the drawing member driving portion 24a by bending.

Further, as shown in Figs. 10-13, the drawing member 2a is stacked with the closing button 20 and the opening button 21 in the thickness direction of the circuit breaker to save space. The moving direction of the pulling member 2a is parallel to the moving direction of the closing button 20 and the opening button 21, and perpendicular to the moving direction of the first locking member 1a, which moves along the width direction of the circuit breaker. The first transition portion 21a of the drawing member 2a moves against the side wall of the circuit breaker housing 1 provided with the locking member opening 17, and the first transition portion 21a is limited by the drawing member limiting rib 6a in the moving direction. It slides with the lever support 4a, and one end of the limiting rib 6a of the pulled part is limited to the circuit breaker shell 1 in the direction perpendicular to the moving direction. The first transition portion 21a and the first locking member 1a are respectively arranged on both sides of the lever support 4a, and the linkage member 3a is located between the first locking member 1a and the lever support 4a; the drawing member 2a, the linkage member 3a and the first locking member 1a are stacked with the closing button 20 and the opening button 21 in the thickness direction of the circuit breaker, and are located above the closing button 20 and the opening button 21. The first locking member of the first locking member 1a The limit platform 14a protrudes and extends into the closing button escape groove 206 of the closing button 20.

Preferably, the linkage member 3a is a Z or U-shaped pull rod, one end is inserted into the first locking member 1a, and the other end extends to the sliding orientation of the drawing member driving portion 24a of the drawing member 2a, and the linkage member 3a Relying on the lever support 4a as a rotating support to drive the first locking member 1a to retract into the circuit breaker housing 1, its installation structure is relatively simple, and the lever support 4a simultaneously functions to limit the first locking member 1a and the supporting linkage 3a.

Preferably, as shown in Figures 21-24, the locking mechanism further includes a second locking member 1b.

As shown in Figures 21-24, the second locking member 1b is pivotally arranged on the circuit breaker housing 1, and the second locking member 1b includes a second locking end 13b; when the circuit breaker is closed, the closing button 20 or The opening button 21 drives the second locking member 1b to rotate (rotate in the second direction) so that the second locking end 13b protrudes outside the circuit breaker housing 1. When the circuit breaker is opened, the opening button 21 or the closing button 20 drives the first The two locking members 1b rotate (rotate in the first direction), so that the second locking end 13b is retracted into the circuit breaker housing 1.

Further, as shown in a solution shown in FIGS. 22-24, the closing button 20 includes a closing button driving portion 207 that is drivingly matched with the second locking member 1b, and the opening button 21 includes a driving portion that is driven by the second locking member 1b. The matched opening button driving part 217, as shown in FIG. 24, when the circuit breaker is closed, the opening button 21 drives the second locking member 1b to rotate through the opening button driving part 217, so that the second locking end 13b protrudes Outside the circuit breaker housing 1, and the opening button driving part 217 is against the second locking end 13b so that the second locking end 13b cannot be retracted into the circuit breaker housing 1; as shown in FIG. 22, when the circuit breaker is opened, The closing button 20 drives the second locking member 1b to rotate through the closing button driving part 207, so that the second locking end 13b is retracted into the circuit breaker housing 1, and the closing button driving part 207 limits the second locking end 13b to hold Inside the circuit breaker housing 1. Specifically, as shown in the direction shown in Figure 24, when the circuit breaker is closed, the opening button 21 drives the second locking member 1b to rotate counterclockwise (rotate in the second direction), so that the second locking end 13b protrudes from the circuit breaker housing 1 External; as shown in the direction shown in Figure 22, when the circuit breaker is opened, the closing button 20 drives the second locking member 1b to rotate clockwise (to the first direction), so that the second locking end 13b is retracted into the circuit breaker housing 1External.

Preferably, as shown in FIGS. 22-24, the second locking member 1b includes a second locking member mounting portion 10b pivotally connected to the circuit breaker housing 1, and a first receiving member of the locking member drivingly cooperated with the opening button 21. Part 11b, the second actuated part 12b of the locking member and the second locking end 13b that are drivingly matched with the closing button 20; when the circuit breaker is closed, the opening button 21 drives the second part through the first actuated part 11b of the locking member The locking member 1b rotates so that the second locking end 13b protrudes outside the circuit breaker housing 1. When the circuit breaker is opened, the closing button 20 drives the second locking member 1b to rotate through the second actuated portion 12b of the locking member to make the second lock The piece 13b is retracted into the circuit breaker housing 1. In this embodiment, the first actuated portion 11b and the second locking end 13b are two mating ends. As another embodiment, the second locking end 13b and the second locking end 13b may also be the same mating end. Further, as shown in FIGS. 22 and 24, the first actuated portion 11b of the locking member includes a first actuated protrusion 110b of the lock member protruding to the side of the opening button 21, and a second actuated portion 12b of the lock member Including the second actuated protruding post 120b of the locking member protruding to the side of the closing button 20, the first actuated protruding post 110b of the locking member and the second actuated protruding post 120b of the locking member are located on the same side of the second locking member 1b, so When the circuit breaker is closed, one side of the opening button driving portion 217 drives the second locking member 1b to rotate through the locking member first driven protrusion 110b, so that the second locking end 13b protrudes outside the circuit breaker housing 1; When the circuit breaker is opened, one side of the closing button driving portion 207 drives the second locking member 1b to rotate through the locking member second driven protrusion 120b, so that the second locking end 13b is retracted into the circuit breaker housing 1.

Further, as shown in FIGS. 22-24, the closing button driving portion 207 includes a closing button driving inclined surface 2070 that is drivingly engaged with the second driven protrusion 120b of the locking member, and the opening button driving portion 217 includes a locking member The opening button driving slope 21700 is driven by the first driven boss 110b, the closing button driving slope 2070 and the opening button driving slope 21700 are inclined in opposite directions, and the locking member first driven boss 110b and the locking member second receiving The movable protrusion 120b is located between the opening button driving slope 21700 and the closing button driving slope 2070;

When the opening button 21 is pressed to open the circuit breaker, the opening button driving slope 21700 moves to the inside of the circuit breaker housing 1 along with the opening button 21 to avoid the second locking member 1b, and the closing button driving slope 2070 follows the closing button 20 moves toward the outside of the circuit breaker housing 1, the closing button drive inclined surface 2070 presses down the second actuated protrusion 120b of the locking member so that the second locking end 13b is retracted into the circuit breaker housing 1, and the closing button drive inclined surface 2070 faces the first The two locking pieces 1b limit their positions to keep them inside the circuit breaker casing 1. Further, as shown in Figures 22 and 23, the closing button driving slope 2070 is formed by a closing button driving protrusion provided on the closing button 20, and the opening button driving slope 21700 is formed by the opening button The opening button driving groove on 21 is formed. When the circuit breaker is in the opening state, the closing button driving slope 2070 and the opening button driving slope 21700 form a funnel-shaped structure.

Preferably, as shown in FIGS. 22-24, the opening button driving portion 217 includes a first step 2170 of the opening button driving portion provided on the side of the opening button 21 and a first step 2170 provided on the opening button driving portion. The second step 2171 of the opening button driving part on the side away from the opening button 21, the first step 2170 of the opening button driving part is in a triangular structure as a whole, and the second step 2171 of the opening button driving part is arranged in the triangle structure Near the top corner of the closing button 20.

Further, as shown in Figures 22 and 24, the second locking member 11b has an approximate I-shaped structure, and the second locking member mounting portion 10b and the locking member first actuated portion 11b are located at one end of the second locking member 1b to form On one horizontal side of the I-shaped structure, the second actuated portion 12b and the second locking end 13b of the locking member are located at the other end of the second locking member 1b, forming another horizontal side of the I-shaped structure.

Further, as shown in FIGS. 3 and 21-24, the second locking member 11b is stacked with the closing button 20 and the opening button 21 in the thickness direction of the circuit breaker to save space. In the thickness direction of the circuit breaker, the second locking member 11b is located above the closing button 20 and the opening button 21, and the drawing member 2a is located above the second locking member 11b; the first locking member 1a is located on the second locking member 11b. Above the two locking ends 13b, one end of the first locking member 1a and the second locking end 13b share a large locking member opening 17, which of course can also be two independent locking member openings. In the moving direction of the closing button 20 and the opening button 21, the first locking member 1a is closer to the inside of the circuit breaker housing 1 than the second locking member 11b.

As shown in FIG. 25, it is an embodiment of the circuit breaker housing 1.

As shown in FIG. 25, the circuit breaker housing 1 has a hexahedral structure as a whole, which includes a front side wall 1001 and a rear side wall 1002 arranged opposite to each other, and a wire outlet 112, button holes 110-111 and The drawing member operating hole 113 and the wire inlet hole 14 provided on the rear side wall 1002.

Preferably, as shown in FIG. 25, the button holes 110-111 include a closing button hole 110 and an opening button hole 111 arranged side by side. Further, the closing button operating end of the closing button 20 and the opening button operating end of the opening button 21 are slidably arranged in the closing button hole 110 and the opening button hole 111, and never protrude. On the front side wall 1001 of the circuit breaker housing 1, so as to prevent the user from accidentally touching the operating end of the closing button/opening button to cause the circuit breaker to close/open, ensuring the stability and safety of the user’s electricity sex.

Preferably, as shown in FIG. 25, the button holes 110-111 and the puller operating hole 113 are provided at one end of the front side wall 1001, and an outlet hole 112 is provided at the other end of the front side wall 1001, which is the first outlet hole. Another outlet hole 112 is arranged between the first outlet hole and the button holes 110-111, which is the second outlet hole; the button hole 110-111 and the second outlet hole are located on the same side of the drawing member operating hole 113. Further, as shown in FIG. 19, the circuit breaker housing 1 further includes a pull-out groove 16 provided on the front side wall 1001, and the pull-out groove 16 is provided in the second outlet hole and the pull-out operation hole. 113 and the two ends respectively communicate with the second outlet hole and the puller operation hole 113, and the outlet wire inserted in the second outlet hole shields the puller groove 16; or, as shown in FIG. 20, the The pullout groove 16 is arranged between the opening button hole 111 and the pullout operation hole 113. When the circuit breaker is in the closed state, the opening button 21 of the circuit breaker covers the pullout groove 16.

Preferably, as shown in FIG. 25, the circuit breaker housing 1 further includes a wire removal hole 1120 provided on the front side wall 1001 and a communication hole 15 provided on the rear side wall 1002, the wire removal hole 1120 and the wire outlet hole 112 In one-to-one cooperation, the communication hole 15 is located between the two wire inlet holes 14.

Preferably, as shown in FIG. 25, the circuit breaker housing 1 further includes a third side wall 1003 and a fourth side wall 1004 arranged oppositely, and a fifth side wall 1005 and a sixth side wall 1006 arranged oppositely; The third side wall 1003, the fourth side wall 1004, the fifth side wall 1005, and the sixth side wall 1006 are all located between the front side wall 1001 and the rear side wall 1002. Furthermore, as shown in FIG. 25, an end of the third side wall 1003 close to the front side wall 1001 is provided with a locking member opening 17.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

A circuit breaker, comprising a circuit breaker housing (1), a button mechanism (2) arranged in the circuit breaker housing (1), and an operating mechanism connected with the button mechanism (2); characterized in that: the circuit breaker housing ( 1) Including a closing button hole (110) and an opening button hole (111) provided thereon, and the button mechanism (2) includes closing buttons (20) respectively slidably arranged in the circuit breaker housing (1) And the opening button (21), the closing button (20) includes a closing button operating end that is arranged at one end and slidingly arranged in the closing button hole (110), and the opening button (21) includes a Slide the opening button operating end set in the opening button hole (111);

Press the closing button operating end to drive the operating mechanism inside the circuit breaker housing (1) to close the circuit breaker, and at the same time, the opening button operating end moves to the outside of the circuit breaker housing (1), towards the circuit breaker housing ( 1) Pressing the operating end of the opening button in the internal direction drives the operating mechanism to open the circuit breaker, and at the same time, the operating end of the closing button moves to the outside of the circuit breaker housing (1).
The circuit breaker according to claim 1, characterized in that: the operating mechanism includes a linkage mechanism, a transmission member (4) pivotally arranged on the circuit breaker housing (1), and a lever mechanism, and the linkage mechanism includes a closing mechanism. Connecting rod (30), opening connecting rod (31) and transmission connecting rod (32); the other end of the closing button (20) is drivingly connected to the transmission member (4) through the closing connecting rod (30), and the opening The other end of the button (21) is drivingly connected to the transmission member (4) through the opening link (31), and the transmission member (4) is drivingly connected to the lever mechanism through the transmission link (32), and the lever mechanism is connected to the moving contact of the circuit breaker (60) Connected; when pressing the closing button (20) toward the inside of the circuit breaker housing (1) to close the circuit breaker, the closing button (20) drives the transmission member (4) through the closing connecting rod (30) Rotate in the first direction, and at the same time the transmission member (4) drives the opening button (21) through the opening link (31) to move to the outside of the circuit breaker housing (1); press the inside direction of the circuit breaker housing (1) When the opening button (21) opens the circuit breaker, the opening button (21) drives the transmission member (4) to rotate in the second direction through the opening link (31), and at the same time the transmission member (4) passes through the closing link (30) The closing button (20) is driven to move toward the outside of the circuit breaker housing (1), and the first direction and the second direction are opposite to each other.
The circuit breaker according to claim 2, characterized in that: the transmission member (4) comprises a transmission member shaft hole (400), a first connection hole (40), a second connection hole (41) and a third connection hole (42), the first connecting hole (40), the second connecting hole (41), and the third connecting hole (42) are respectively located at the three vertices of a triangle, and the transmission member shaft hole (400) is arranged in the transmission member (4). ) Middle part; the transmission member (4) is pivoted on the circuit breaker housing (1) through its transmission member shaft hole (400), and the transmission member (4) passes through the first connection hole (40) and the second connection hole respectively (41). The third connecting hole (42) is connected with the closing connecting rod (30), the opening connecting rod (31) and the driving connecting rod (32);

The lever mechanism includes a jumper (50), a lock (51), and a rotating plate (52) pivotally arranged on the circuit breaker housing (1). The jumper (50) and the locker (51) are locked together And are respectively pivotally arranged on the rotating plate (52), the rotating plate (52) is connected with the moving contact (60) of the circuit breaker, and the transmission member (4) is drivingly connected with the trip (50) through the transmission connecting rod (32) .
The circuit breaker according to claim 1, characterized in that: the circuit breaker further comprises a first track mechanism and a second track mechanism for respectively defining the movement paths of the closing button (20) and the opening button (21).
The circuit breaker according to claim 4, characterized in that: the first track mechanism includes a closing button rail platform (201) arranged on the closing button (20) and a circuit breaker housing (1) arranged on the The closing button track groove (101), the closing button track table (201) is slidably arranged in the closing button track groove (101); the second track mechanism includes an opening button arranged on the circuit breaker housing (1) In the track groove, the opening button (21) is slidably arranged in the opening button track groove.
The circuit breaker according to claim 4, characterized in that: the first track mechanism includes a closing button rail platform (201) arranged on the closing button (20) and a circuit breaker housing (1) arranged on the The closing button track groove (101), the closing button track table (201) is slidably arranged in the closing button track groove (101); the second track mechanism includes the closing button (20) and being arranged along the closing button The opening button track bar (205) and the opening button track groove (2150) arranged on the opening button (21), the opening button track groove (2150) and the opening button track set in the length direction of the button (20) The strip (205) is slidingly fitted.
The circuit breaker according to claim 1, characterized in that: the circuit breaker further comprises a locking mechanism cooperating with the button mechanism (2), and the locking mechanism comprises a first locking member ( 1a), the circuit breaker housing (1) further includes a locking piece opening (17) that cooperates with the first locking piece 1a;

When the circuit breaker is in the open state, one end of the first locking member (1a) protrudes from the locking member opening (17) outside the circuit breaker housing (1), and the first locking member (1a) can be retracted by the retracting external force. Return to the inside of the circuit breaker shell (1);

When the circuit breaker is in the closed state, the first locking member (1a) protrudes outside the circuit breaker housing (1), and is restricted by the closing button (20) and/or the opening button (21) and cannot be retracted to open the circuit Inside the housing (1).
The circuit breaker according to claim 7, characterized in that: the circuit breaker further comprises an unlocking mechanism drivingly connected to the first locking member (1a);

When the circuit breaker is in an open state, the operation unlocking mechanism can drive the first locking member (1a) to retract into the circuit breaker housing (1).
The circuit breaker according to claim 7, characterized in that: the first locking member (1a) is retracted into the circuit breaker and then cooperates with the closing button (20) and/or the opening button (21) to lock The closing button (20) and/or the opening button (21) prevent the circuit breaker from closing;

The closing button (20) and/or the opening button (21) is provided with a button limit slot (216) for the limit cooperation with the first locking member (1a), and the first locking member (1a) includes The first locking member limit platform (14a) that cooperates with the button limit slot (216) to limit the position;

When the circuit breaker is in the closed state, the button limit slot (216) and the first locking member limit table (14a) are set in a misalignment, and the closing button (20) and/or the opening button (21) prevent the first locking The part (1a) moves toward the inside of the circuit breaker housing (1); when the circuit breaker is in the open state, the button limit slot (216) is set opposite to the first locking part limit table (14a), and the first lock The member (1a) can be moved toward the inside of the circuit breaker housing (1) by the retracted external force, so that the first locking member limit table (14a) slides into the button limit slot (216) and locks the closing button (20) and / Or opening button (21).
The circuit breaker according to claim 7, characterized in that: the closing button (20) and the opening button (21) are arranged in parallel and linearly slidably installed in the circuit breaker housing (1), and the first locking member (1a) Installed in the housing (6) for linear movement, the moving direction of the closing button (20) and the opening button (21) and the moving direction of the first locking member (1a) are perpendicular to each other;

The locking mechanism also includes a first return spring (5a) arranged between the first locking member (1a) and the circuit breaker housing (1), the first return spring (5a) exerts an action on the first locking member (1a) Force so that one end of the first locking member (1a) protrudes outside the circuit breaker housing (1).
The circuit breaker according to claim 10, characterized in that: the closing button (20) and the first locking member (1a) are both located between the opening button (21) and the opening of the locking member (17). A locking member (1a) is located on one side of the closing button (20); the opening button (21) includes a button limit slot (216) for cooperating with the first locking member (1a). The locking member (1a) includes a first locking member limit platform (14a) matching the button limit slot (216), and the closing button (20) is provided with a first locking member (1a) for avoiding the first locking member (1a). The closing button escape slot (206) of the locking piece limit table (14a);

When one end of the first locking member (1a) extends out of the circuit breaker housing (1), the first locking member limit platform (14a) is located in the closing button avoiding slot (206), and the closing button avoiding slot (206) ) In the moving direction of the closing button (20) is greater than the width of the first locking member limit table (14a), so that the closing button (20) and the opening button (21) can move and drive the circuit breaker to close And opening;

When the circuit breaker is in the closed state, the button limit slot (216) and the first locking member limit table (14a) are arranged in a staggered manner, and the first locking member limit table (14a) is located in the closing button avoiding slot (206) ), the opening button (21) prevents the first locking member (1a) from moving toward the inside of the circuit breaker housing (1). When the circuit breaker is in the opening state, the button limit slot (216) is connected to the first locking The limit table (14a) of the first locking member (14a) is arranged relative to each other, and the first locking member (1a) can be moved toward the inside of the circuit breaker housing (1) by the retracted external force, so that the limit table of the first locking member (14a) slides into the button limit slot (216).
The circuit breaker according to claim 1, characterized in that: the circuit breaker further comprises a locking mechanism cooperating with the button mechanism (2), and the locking mechanism comprises a second locking member pivotally arranged on the circuit breaker housing (1) (1b), the second locking member (1b) includes a second locking end (13b);

Press the closing button (20) to drive the operating mechanism to close the circuit breaker, and at the same time to move the opening button (21) to the outside of the circuit breaker housing (1), the closing button (20) and/or the opening button ( 21) Drive the second locking member (1b) to rotate so that the second locking end (13b) protrudes outside the circuit breaker housing (1), and the second locking member (1b) is opened by the closing button (20) and/or opening The button (21) limit cannot be retracted inside the circuit breaker shell (1); press the opening button (21) to drive the operating mechanism to open the circuit breaker, and at the same time make the closing button (20) to the outside of the circuit breaker shell (1) Moving, the closing button (20) and/or the opening button (21) drive the second locking member (1b) to rotate, so that the second locking end (13b) is retracted into the circuit breaker housing (1).
The circuit breaker according to claim 12, characterized in that: the closing button (20) comprises a closing button driving part (207) drivingly cooperated with the second locking member (1b), and the opening button (21) comprises The opening button driving part (217) drivingly cooperated with the second locking part (1b), when the circuit breaker is closed, the opening button (21) drives the second locking part (1b) through the opening button driving part (217) ) Rotate so that the second locking end (13b) protrudes outside the circuit breaker housing (1), and the opening button driving part (217) is against the second locking end (13b) so that the second locking end (13b) cannot be retracted Inside the circuit breaker housing (1), when the circuit breaker is opened, the closing button (20) drives the second locking member (1b) to rotate through the closing button driving part (207), so that the second locking end (13b) is retracted into the circuit breaker The inside of the circuit breaker housing (1), and the closing button driving part (207) limits the second locking end (13b) to be kept inside the circuit breaker housing (1).
The circuit breaker according to claim 13, characterized in that: the second locking member (1b) comprises a second locking member mounting portion (10b) pivotally connected to the circuit breaker housing (1), and a closing button ( 20) The first actuated portion (11b) of the locking member that is driven to cooperate, the second actuated portion (12b) and the second locking end (13b) of the locking member that is driven to cooperate with the opening button (21); the circuit breaker is closed When the brake is switched on, the opening button (21) drives the second locking member (1b) to rotate through the first receiving part (11b) of the locking member, so that the second locking end (13b) protrudes outside the circuit breaker housing (1), and the circuit breaker When opening, the closing button (20) drives the second locking member (1b) to rotate through the second actuated part (12b) of the locking member, so that the second locking member (13b) is retracted into the circuit breaker housing (1);

The second locking member (1b) is stacked with the closing button (20) and the opening button (21) in the thickness direction of the circuit breaker.
The circuit breaker according to claim 14, characterized in that: the first actuated portion (11b) of the locking member comprises a first actuated protrusion (110b) of the locking member protruding to the side of the opening button (21) , The second actuated portion (12b) of the locking member includes a second actuated protrusion (120b) of the locking member protruding to the side of the closing button (20);

The closing button driving part (207) includes a closing button driving slope (2070) that is drivingly matched with the second driven protrusion (120b) of the locking member, and the opening button driving part (217) includes the first receiving part of the locking member. The moving convex column (110b) drives the matching opening button drive slope (21700), the closing button drive slope (2070) and the opening button drive slope (21700) have opposite inclination directions, and the locking member first driven convex column (110b) ) And the second driven protrusion (120b) of the locking member are located between the opening button driving slope (21700) and the closing button driving slope (2070);

When the closing button (20) is pressed to close the circuit breaker, the closing button drive ramp (2070) moves to the inside of the circuit breaker housing (1) with the closing button (20) to avoid the second locking member (1b), and at the same time The opening button driving slope (21700) moves to the outside of the circuit breaker housing (1) with the opening button (21), and the driving slope (21700) drives the second locking member ( 1b) Rotate so that the second locking end (13b) protrudes outside the circuit breaker housing (1), and the driving slope (21700) bears against the locking member's first driven protrusion (110b) so that the second locking member (1b) cannot Retract the inside of the circuit breaker shell (1);

When the opening button (21) is pressed to open the circuit breaker, the opening button driving slope (21700) moves along with the opening button (21) to the inside of the circuit breaker housing (1) to avoid the second locking member (1b) and close The closing button driving slope (2070) moves with the closing button (20) to the outside of the circuit breaker housing (1), and the closing button driving slope (2070) squeezes the second driven boss (120b) of the locking member to make the second The locking end (13b) is retracted into the circuit breaker casing (1), and the closing button driving slope (2070) limits the second locking member (1b) to keep it inside the circuit breaker casing (1).